971273617 has 4 divisors (see below), whose sum is σ = 1002605056. Its totient is φ = 939942180.

The previous prime is 971273593. The next prime is 971273651. The reversal of 971273617 is 716372179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 971273617 - 2⁷ = 971273489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971283617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15665673 + ... + 15665734.

It is an arithmetic number, because the mean of its divisors is an integer number (250651264).

Almost surely, 2^971273617 is an apocalyptic number.

It is an amenable number.

971273617 is a deficient number, since it is larger than the sum of its proper divisors (31331439).

971273617 is a wasteful number, since it uses less digits than its factorization.

971273617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31331438.

The product of its digits is 111132, while the sum is 43.

The square root of 971273617 is about 31165.2629862159. The cubic root of 971273617 is about 990.3313576383.

The spelling of 971273617 in words is "nine hundred seventy-one million, two hundred seventy-three thousand, six hundred seventeen".